Native class "FSM" not found

[GreenCrowDev]

How to reproduce:

1. Delete the .godot folder so that when you open the project Godot repopulates the cache;
2. Open the project with the editor;
3. The output consoles will show errors.

modules/gdscript/gdscript_compiler.cpp:123 - GDScript bug: Native class "FSM" not found.
modules/gdscript/gdscript_compiler.cpp:123 - GDScript bug: Native class "FSMState" not found.
modules/gdscript/gdscript_compiler.cpp:123 - GDScript bug: Native class "FSMState" not found.
modules/gdscript/gdscript_compiler.cpp:123 - GDScript bug: Native class "FSMState" not found.
modules/gdscript/gdscript_compiler.cpp:123 - GDScript bug: Native class "FSMState" not found.
modules/gdscript/gdscript_compiler.cpp:123 - GDScript bug: Native class "FSMState" not found.
res://entities/traffic_light/scripts/traffic_light.gd:32 - Compile Error: Identifier not found: FSMState
modules/gdscript/gdscript.cpp:2936 - Failed to load script "res://entities/traffic_light/scripts/traffic_light.gd" with error "Compilation failed". (User)

These errors can be neglected, as it seems that playing the demo project has no issues.
If you reopen the editor a second time after the cache has been generated, the errors are gone.

Related issues:
godotengine/godot#80850
godotengine/godot-cpp#624

EDIT:
The issue seems fixed by godotengine/godot#92667 in 4.4.
It's probably better to wait for the 4.4 stable release.